Was Henrico home blown up on purpose?

HENRICO, VA (WWBT) – Henrico fire investigators are looking into whether a house that exploded Wednesday night was blown up intentionally.

An affidavit for a search warrant filed Thursday afternoon indicates that the Henrico Fire Marshal's Office is seeking items that include explosive liquids, switches, fuses, manuals and instructions.

According to the document, a neighbor told investigators that, "two unknown subjects dressed in all black clothing had recently been seen walking around this residence during nighttime hours."

The document, authored by Lt. Gerald M. Parsley, Jr., states that Parsley has, "been unable to identify an accidental source of the explosion."

An official cause of the blast has not yet been determined.

At approximately 8:30 p.m. on March 30, the house located at 7001 Yahley Road exploded, creating a massive fireball and noise that could be heard for miles. The owners were not home at the time, and have since told investigators they were living out of state.

The house was for rent at the time of the explosion.

Copyright 2011 WWBT NBC12. All rights reserved.